摘要
研究固定化产黄青霉废菌体对Ｐｂ２＋的吸附与脱附平衡的结果表明，Ｐｂ２＋的生物吸附受ｐＨ值的影响很大，温度的影响则很小．ＥＤＴＡ是洗脱固定化产黄青霉废菌体上所吸附Ｐｂ２＋的最佳脱附剂．在保持脱附率为１００％的条件下，ＥＤＴＡ的初浓度、固定化废菌颗粒的吸附量与最大固液比之间存在正相关关系．０．１ｍｏｌ／Ｌ的ＥＤＴＡ在脱附Ｐｂ２＋时终浓度最高可达２０７００ｍｇ／Ｌ，最大固液比可达２９０以上，浓缩因子可达１１３。
The result of adsorption and desorption equilibrium of Pb(Ⅱ) by immobilized waste mycelium of Penicillium chrysogenum indicated that,the biosorption of Pb2+ was strongly affected by pH,but was not sensitive to temperature,EDTA was the optimum eluant for the elution of adsorbed lead by immobilized waste mycelium P.chrysogenum particle.At the condition of maintaining the elution efficiency in 100%,the stoichiometric relation among the concentration of the EDTA,the uptake capacity of immobilized waste mycelium particle and the maximum solid to liquid ratio could be described using given equation by the paper.When the concentration of EDTA was 01mol/L,the maximum eluate lead concentration could achieve 20700mg/L,the maximum ratio of solid to liquid could be over 290,the concentrate factor could achieve 113.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1998年第4期72-75,共4页
Environmental Science
关键词
生物吸附
脱附
黄青霉废菌体
废水处理
铅
吸附
biosorption,immobilization,adsorption equilibrium,desorption equilibrium,Penicillium chrysogenum.
